<?php

class Page extends Think {
public $firstRow	;
public $listRows	;
public $parameter  ;
protected $totalPages  ;
protected $totalRows  ;
protected $nowPage    ;
protected $coolPages   ;
protected $rollPage   ;
protected $config  =	array('header'=>'条记录','prev'=>'上一页','next'=>'下一页','first'=>'第一页','last'=>'最后一页','theme'=>' %totalRow% %header% %nowPage%/%totalPage% 页 %upPage% %downPage% %first%  %prePage%  %linkPage%  %nextPage% %end%');
public function __construct($totalRows,$listRows,$parameter='') {
$this->totalRows = $totalRows;
$this->parameter = $parameter;
$this->rollPage = C('PAGE_ROLLPAGE');
$this->listRows = !empty($listRows)?$listRows:C('PAGE_LISTROWS');
$this->totalPages = ceil($this->totalRows/$this->listRows);
$this->coolPages  = ceil($this->totalPages/$this->rollPage);
$this->nowPage  = !empty($_GET[C('VAR_PAGE')])?$_GET[C('VAR_PAGE')]:1;
if(!empty($this->totalPages) &&$this->nowPage>$this->totalPages) {
$this->nowPage = $this->totalPages;
}
$this->firstRow = $this->listRows*($this->nowPage-1);
}
public function setConfig($name,$value) {
if(isset($this->config[$name])) {
$this->config[$name]    =   $value;
}
}
public function show() {
if(0 == $this->totalRows) return '';
$p = C('VAR_PAGE');
$nowCoolPage      = ceil($this->nowPage/$this->rollPage);
$url  =  $_SERVER['REQUEST_URI'].(strpos($_SERVER['REQUEST_URI'],'?')?'':'?').'&'.$this->parameter;
$parse = parse_url($url);
if(isset($parse['query'])) {
parse_str($parse['query'],$params);
unset($params[$p]);
$url   =  $parse['path'].'?'.http_build_query($params);
}
$upRow   = $this->nowPage-1;
$downRow = $this->nowPage+1;
if ($upRow>0){
$upPage="<a href='".$url.'&'.$p."=$upRow'>".$this->config['prev'].'</a>';
}else{
$upPage='';
}
if ($downRow <= $this->totalPages){
$downPage="<a href='".$url.'&'.$p."=$downRow'>".$this->config['next'].'</a>';
}else{
$downPage='';
}
if($nowCoolPage == 1){
$theFirst = '';
$prePage = '';
}else{
$preRow =  $this->nowPage-$this->rollPage;
$prePage = "<a href='".$url.'&'.$p."=$preRow' >上".$this->rollPage.'页</a>';
$theFirst = "<a href='".$url.'&'.$p."=1' >".$this->config['first'].'</a>';
}
if($nowCoolPage == $this->coolPages){
$nextPage = '';
$theEnd='';
}else{
$nextRow = $this->nowPage+$this->rollPage;
if($nextRow>$this->totalPages)$nextRow = $this->totalPages;
$theEndRow = $this->totalPages;
$nextPage = "<a href='".$url.'&'.$p."=$nextRow' >下".$this->rollPage.'页</a>';
$theEnd = "<a href='".$url.'&'.$p."=$theEndRow' >".$this->config['last'].'</a>';
}
$linkPage = '';
for($i=1;$i<=$this->rollPage;$i++){
$page=($nowCoolPage-1)*$this->rollPage+$i;
if($page!=$this->nowPage){
if($page<=$this->totalPages){
$linkPage .= "&nbsp;<a href='".$url.'&'.$p."=$page'>&nbsp;".$page.'&nbsp;</a>';
}else{
break;
}
}else{
if($this->totalPages != 1){
$linkPage .= "&nbsp;<span class='current'>".$page.'</span>';
}
}
}
$pageStr	 =	 str_replace(
array('%header%','%nowPage%','%totalRow%','%totalPage%','%upPage%','%downPage%','%first%','%prePage%','%linkPage%','%nextPage%','%end%'),
array($this->config['header'],$this->nowPage,$this->totalRows,$this->totalPages,$theFirst,$upPage,$prePage,$linkPage,$nextPage,$downPage,$theEnd),$this->config['theme']);
return $pageStr;
}
}
?>